In section 19(5) of the Merchant Shipping Act 1970 (which authorises safety regulations to make a contravention of the regulations punishable on summary conviction with a fine not exceeding £200 if the offence is committed by the master or owner of the ship and £20 if it is committed by another person) for the words from " summary conviction " onwards there shall be substituted the words " conviction on indictment with a fine and on summary conviction with a fine not exceeding £1,000 ".